[MlMt] Smart Mailboxes and column selection

[Randall Meadows]

On 8 Mar 2019, at 12:48, Randall Meadows wrote:

> I'm pretty certain that all my Smart Mailboxes used to show the From: 
> column.  Currently, they are all showing the To: column; duh, I know 
> who the messages are to.  Yes, I can add the From: column manually, 
> but I'm unable to remove the To: column (it's disabled in the pop-up 
> menu).
>
> Anyone know what caused this change, and how I can get back to the way 
> the mailboxes displayed yesterday?!
>
> Also, am I really unable to set default column configurationD for 
> Smart Mailboxes?  That option is also dimmed in the pop-up menu...

On rare occasions, I do get the "Use as Default Columns" item enabled, 
but on the rare occasions (which do NOT correspond to the previous "rare 
occasions") where the "Revert to Default Columns" is enabled, selected 
said item does NOTHING (e.g., the columns remain as they are, they are 
NOT reset to the previously-configured default columns.  I cannot 
determine what causes said "rare occasions" to occur...